4. Troubleshooting
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Audio problems
Receiver
Turn on the phone. Go to service test menu; choose “12. Receiver” presses any key to check that the
Receiver is working properly.
Check Receiver and receiver cconnector (Fig 3.1)
Microphone
1. Turn on the phone. Go to service test menu; choose “5. Echo Loop” (An audio loop is activated)
check that the Microphone is working properly.
Check that the Microphone (Fig.4.1) is not mechanical damaged, dirty or oxidized.
Replace it if necessary.
Fig.3.1
Fig.4.1
Содержание KG300
Страница 3: ... 4 ...
Страница 11: ...2 Software Download Procedure 12 Select default folder Press Install ...
Страница 12: ...2 Software Download Procedure 13 Press Finish Enable Leo Download tool ...
Страница 19: ...3 Assembly and Disassembly 20 v Take off the Main Board from B Cover Receiver Keypad ...
Страница 53: ...4 Troubleshooting 54 7312 RF Placement PX Path TX Path ...
Страница 57: ...4 Troubleshooting 58 RF transceiver U602 ...
Страница 61: ...4 Troubleshooting 62 U602 U601 J601 ...
Страница 62: ...5 Circuit Diagrams 63 SYSTEM BLOCK DIAGRAM 5 CIRCUIT DIAGRAMS ...
Страница 67: ... 68 ...
Страница 76: ... 77 6 PCB LAYOUT ...
Страница 77: ... 78 6 PCB LAYOUT ...
Страница 79: ... 80 ...
Страница 84: ...Note ...
Страница 85: ...Note ...